What comes to you of good is from Allāh, but what comes to you of evil, [O man], is from yourself.1 And We have sent you, [O Muḥammad], to the people as a messenger, and sufficient is Allāh as Witness.2
Translation: Saheeh International (English)
1 As a result of your mistakes or sins.
2 i.e., never absent, always seeing and having complete knowledge of everything within His dominion.
O humankind, any good that pleases you – such as wealth or children – is from Allah. He has sent it to you through His grace. Whatever bad occurs to you in respect of your wealth or children is from your own self because of the sins you commit. I have sent you, O Prophet, as a messenger to all people to communicate to them the message of your Lord. Allah is enough of a witness to the truth of what you communicate from Him, because of the evidences and proof He has given you.